'Friends' cast sings show's theme song with James Corden

Just call it "Golf Cart Karaoke."

James Corden, host of the reunion that we all couldn't stop talking about, recruited the cast of "Friends" for a special segment that aired on his show Wednesday night. In the clip, Corden helps transport the cast -- Jennifer Aniston, Courteney Cox, Lisa Kudrow, Matt LeBlanc, Matthew Perry and David Schwimmer -- to the set and uses the brief ride through the Warner Bros. lot, where they used to film, to channel "Carpool Karaoke." Do you really need to ask the song choice?